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SubjectRe: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance

On Mar 23, 2010, at 8:22 PM, Robin Holt wrote:

> On Tue, Mar 23, 2010 at 07:25:43PM +0100, Anton Starikov wrote:
>> On Mar 23, 2010, at 7:21 PM, Andrew Morton wrote:
>>>> I will apply this commits to 2.6.32, I afraid current OFED (which I need also) will not work on 2.6.33+.
>>> You should be able to simply set CONFIG_RWSEM_GENERIC_SPINLOCK=n,
>>> CONFIG_RWSEM_XCHGADD_ALGORITHM=y by hand, as I mentioned earlier?
>> Hm. I tried, but when I do "make oldconfig", then it gets rewritten, so I assume that it conflicts with some other setting from default fedora kernel config. trying to figure out which one exactly.
> Have you tracked this down yet? I just got the patches applied against
> an older kernel and am running into the same issue.

I decided to not track down this issue and just applied patches. I understood that with this patches there is no need to change this config options. Am I wrong?


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